Hefting is a night-time sport played in dormitories and other communal sleeping places (tents, hostels, etc.). Once the lights are out, a player leves their own bed to attack another person by wrestling the victim (Heftee) on their bed; whoever is on-top when the lights are switched on wins. Due to this, a Heft must be conducted when the lights are out. If the Heftee ends up on-top, they win the Heft.
A "Flying Heft" is conducted by jumping from a top bunk-bed straight onto a heftee's bed.
An "Owen" is a mis-Heft caused by two or more people simultaneously attempting to Heft another whilst, unbeknownst due to the darkness, that person is already Hefting someone else, and the two luckless Hefters end up unwittingly Hefting each other insead.
I got Hefted in my sleep
by LiteraryDitch April 10, 2009
Fat and pathetic losers with no sole purpose in life
by Imahomo1234 March 15, 2016
"whoa, that fat guys strong"
"naa, he's just got heft"
by snorv October 21, 2008
Absolutely destroyed. Used mostly and invented by the youtuber/twitch streamer DuncanKneeDeep.
I just got fucking hefted by that test.
by Spanicatthedisco May 13, 2015
A word for being heavy generally reserved for object.
"She's a fair heft of a girl"

Or as an expression:

"The heft this/that"
by Papa Bear June 21, 2005
To really need the toilet to the point where you have to stand completely rigid and clench your buttocks.
Where's your toilet...I'm totally hefted!
by shoeboy1972 January 6, 2020
An awesome funk/rock/rap band from london. If you haven't heard them get it sorted.
man i saw heft last night, they kicked ass.
by funkfan March 21, 2006